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            <a href="https://flutterchina.club" target="_blank" class="custom-link"><div><img height=20 style='position:relative; top:5px; padding-right:5px ' src='https://cdn.jsdelivr.net/gh/flutterchina/website@1.0/images/favicon.png'/> Flutter中文网</div></a>
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                    简介
            
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                    前言
            
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                    第一章：起步
            
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                    1.1：移动开发技术简介
            
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                    1.2：初识Flutter
            
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                    1.3：搭建Flutter开发环境
            
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                    1.4：Dart语言简介
            
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                    第二章：第一个Flutter应用
            
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                    2.1：计数器示例
            
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                    2.2：路由管理
            
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                    2.3：包管理
            
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                    2.4：资源管理
            
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                    2.5：调试Flutter APP
            
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                    2.6：Dart线程模型及异常捕获
            
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                    第三章：基础组件
            
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                    3.1：Widget简介
            
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                    3.2：状态管理
            
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                    3.3：文本、字体样式
            
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                    3.4：按钮
            
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                    3.5：图片和Icon
            
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                    3.6：单选框和复选框
            
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                    3.7：输入框和表单
            
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                    3.8：进度指示器
            
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                    第四章：布局类组件
            
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                    4.1：布局类组件简介
            
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                    4.2：线性布局（Row、Column）
            
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                    4.3：弹性布局（Flex）
            
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                    4.4：流式布局（Wrap、Flow）
            
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                    4.5：层叠布局（Stack、Positioned）
            
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                    4.6：对齐与相对定位（Align）
            
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                    第五章：容器类组件
            
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                    5.1：填充（Padding）
            
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                    5.2：尺寸限制类容器（ConstrainedBox等）
            
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                    5.3：装饰容器（DecoratedBox）
            
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                    5.4：变换（Transform）
            
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                    5.5：Container容器
            
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                    5.6：Scaffold、TabBar、底部导航
            
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                    5.7：剪裁（Clip）
            
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        <li class="chapter " data-level="2.6" data-path="../chapter6/">
            
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                    第六章：可滚动组件
            
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        <li class="chapter " data-level="2.6.1" data-path="../chapter6/intro.html">
            
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                    6.1：可滚动组件简介
            
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        <li class="chapter " data-level="2.6.2" data-path="../chapter6/single_child_scrollview.html">
            
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                    6.2：SingleChildScrollView
            
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                    6.3：ListView
            
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                    6.4：GridView
            
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                    6.5：CustomScrollView
            
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                    6.6：滚动监听及控制（ScrollController）
            
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                    第七章：功能型组件
            
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                    7.1：导航返回拦截（WillPopScope）
            
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                    7.2：数据共享（InheritedWidget）
            
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                    7.3： 跨组件状态共享（Provider）
            
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                    7.4：颜色和主题（Theme）
            
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                    7.5：异步UI更新（FutureBuilder、StreamBuilder）
            
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        <li class="chapter " data-level="2.7.6" data-path="../chapter7/dailog.html">
            
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                    7.6：对话框详解
            
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        <li class="header">进阶篇</li>
        
        
    
        <li class="chapter " data-level="3.1" data-path="../chapter8/">
            
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                    第八章：事件处理与通知
            
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        <li class="chapter " data-level="3.1.1" data-path="../chapter8/listener.html">
            
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                    8.1：原始指针事件处理
            
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        <li class="chapter " data-level="3.1.2" data-path="../chapter8/gesture.html">
            
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                    8.2：手势识别
            
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        <li class="chapter " data-level="3.1.3" data-path="../chapter8/eventbus.html">
            
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                    8.3：全局事件总线
            
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        <li class="chapter " data-level="3.1.4" data-path="../chapter8/notification.html">
            
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                    8.4：通知(Notification)
            
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        <li class="chapter " data-level="3.2" data-path="../chapter9/">
            
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                    第九章：动画
            
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        <li class="chapter " data-level="3.2.1" data-path="../chapter9/intro.html">
            
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                    9.1：Flutter动画简介
            
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        <li class="chapter " data-level="3.2.2" data-path="../chapter9/animation_structure.html">
            
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                    9.2：动画结构
            
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                    9.3：自定义路由过渡动画
            
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        <li class="chapter " data-level="3.2.4" data-path="../chapter9/hero.html">
            
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                    9.4：Hero动画
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.2.5" data-path="../chapter9/stagger_animation.html">
            
                <a href="../chapter9/stagger_animation.html">
            
                    
                    9.5：交织动画
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.2.6" data-path="../chapter9/animated_switcher.html">
            
                <a href="../chapter9/animated_switcher.html">
            
                    
                    9.6：通用“动画切换”组件（AnimatedSwitcher）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.2.7" data-path="../chapter9/animated_widgets.html">
            
                <a href="../chapter9/animated_widgets.html">
            
                    
                    9.7：动画过渡组件
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="3.3" data-path="../chapter10/">
            
                <a href="../chapter10/">
            
                    
                    第十章：自定义组件
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="3.3.1" data-path="../chapter10/intro.html">
            
                <a href="../chapter10/intro.html">
            
                    
                    10.1：自定义组件方法简介
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.3.2" data-path="../chapter10/combine.html">
            
                <a href="../chapter10/combine.html">
            
                    
                    10.2：组合现有组件
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.3.3" data-path="../chapter10/turn_box.html">
            
                <a href="../chapter10/turn_box.html">
            
                    
                    10.3：组合实例：TurnBox
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.3.4" data-path="../chapter10/custom_paint.html">
            
                <a href="../chapter10/custom_paint.html">
            
                    
                    10.4：自绘组件（CustomPaint与Canvas）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.3.5" data-path="../chapter10/gradient_circular_progress_demo.html">
            
                <a href="../chapter10/gradient_circular_progress_demo.html">
            
                    
                    10.5：自绘实例：圆形渐变进度条(自绘)
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="3.4" data-path="../chapter11/">
            
                <a href="../chapter11/">
            
                    
                    第十一章：文件操作与网络请求
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="3.4.1" data-path="../chapter11/file_operation.html">
            
                <a href="../chapter11/file_operation.html">
            
                    
                    11.1：文件操作
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.4.2" data-path="../chapter11/http.html">
            
                <a href="../chapter11/http.html">
            
                    
                    11.2：Http请求-HttpClient
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.4.3" data-path="../chapter11/dio.html">
            
                <a href="../chapter11/dio.html">
            
                    
                    11.3：Http请求-Dio package
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.4.4" data-path="../chapter11/download_with_chunks.html">
            
                <a href="../chapter11/download_with_chunks.html">
            
                    
                    11.4：实例：Http分块下载
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.4.5" data-path="../chapter11/websocket.html">
            
                <a href="../chapter11/websocket.html">
            
                    
                    11.5：WebSocket
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.4.6" data-path="../chapter11/socket.html">
            
                <a href="../chapter11/socket.html">
            
                    
                    11.6：使用Socket API
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.4.7" data-path="../chapter11/json_model.html">
            
                <a href="../chapter11/json_model.html">
            
                    
                    11.7：Json转Dart Model类
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="3.5" data-path="../chapter12/">
            
                <a href="../chapter12/">
            
                    
                    第十二章：包与插件
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="3.5.1" data-path="../chapter12/develop_package.html">
            
                <a href="../chapter12/develop_package.html">
            
                    
                    12.1：开发package
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.5.2" data-path="../chapter12/platform-channel.html">
            
                <a href="../chapter12/platform-channel.html">
            
                    
                    12.2：平台通道简介
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.5.3" data-path="../chapter12/develop_plugin.html">
            
                <a href="../chapter12/develop_plugin.html">
            
                    
                    12.3：开发Flutter插件
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.5.4" data-path="../chapter12/android_implement.html">
            
                <a href="../chapter12/android_implement.html">
            
                    
                    12.4：插件开发：实现Android端API
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.5.5" data-path="../chapter12/ios_implement.html">
            
                <a href="../chapter12/ios_implement.html">
            
                    
                    12.5：插件开发：实现IOS端API
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.5.6" data-path="../chapter12/texture_platformview.html">
            
                <a href="../chapter12/texture_platformview.html">
            
                    
                    12.6：Texture和PlatformView
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="3.6" data-path="./">
            
                <a href="./">
            
                    
                    第十三章：国际化
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="3.6.1" data-path="multi_languages_support.html">
            
                <a href="multi_languages_support.html">
            
                    
                    13.1：让App支持多语言
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.6.2" data-path="locallization_implement.html">
            
                <a href="locallization_implement.html">
            
                    
                    13.2：实现Localizations
            
                </a>
            

            
        </li>
    
        <li class="chapter active" data-level="3.6.3" data-path="intl.html">
            
                <a href="intl.html">
            
                    
                    13.3：使用Intl包
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.6.4" data-path="faq.html">
            
                <a href="faq.html">
            
                    
                    13.4：国际化常见问题
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="3.7" data-path="../chapter14/">
            
                <a href="../chapter14/">
            
                    
                    第十四章：Flutter核心原理
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="3.7.1" data-path="../chapter14/flutter_ui_system.html">
            
                <a href="../chapter14/flutter_ui_system.html">
            
                    
                    14.1：Flutter UI系统
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.7.2" data-path="../chapter14/element_buildcontext.html">
            
                <a href="../chapter14/element_buildcontext.html">
            
                    
                    14.2：Element和BuildContext
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.7.3" data-path="../chapter14/render_object.html">
            
                <a href="../chapter14/render_object.html">
            
                    
                    14.3：RenderObject与RenderBox
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.7.4" data-path="../chapter14/flutter_app_startup.html">
            
                <a href="../chapter14/flutter_app_startup.html">
            
                    
                    14.4：Flutter从启动到显示
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.7.5" data-path="../chapter14/image_and_cache.html">
            
                <a href="../chapter14/image_and_cache.html">
            
                    
                    14.5：Flutter图片加载与缓存
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

    
        
        <li class="header">实例篇</li>
        
        
    
        <li class="chapter " data-level="4.1" data-path="../chapter15/intro.html">
            
                <a href="../chapter15/intro.html">
            
                    
                    第十五章：一个完整的Flutter应用
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="4.1.1" data-path="../chapter15/intro.html">
            
                <a href="../chapter15/intro.html">
            
                    
                    15.1：应用简介
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.2" data-path="../chapter15/code_structure.html">
            
                <a href="../chapter15/code_structure.html">
            
                    
                    15.2：APP代码结构
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.3" data-path="../chapter15/models.html">
            
                <a href="../chapter15/models.html">
            
                    
                    15.3：Model类定义
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.4" data-path="../chapter15/globals.html">
            
                <a href="../chapter15/globals.html">
            
                    
                    15.4：全局变量及共享状态
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.5" data-path="../chapter15/network.html">
            
                <a href="../chapter15/network.html">
            
                    
                    15.5：网络请求封装
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.6" data-path="../chapter15/entry.html">
            
                <a href="../chapter15/entry.html">
            
                    
                    15.6：App入口及首页
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.7" data-path="../chapter15/login_page.html">
            
                <a href="../chapter15/login_page.html">
            
                    
                    15.7：登录页
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.8" data-path="../chapter15/language_and_theme_setting.html">
            
                <a href="../chapter15/language_and_theme_setting.html">
            
                    
                    15.8：多语言和多主题
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

    

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                                <h1 id="&#x4F7F;&#x7528;intl&#x5305;">&#x4F7F;&#x7528;Intl&#x5305;</h1>
<p>&#x4F7F;&#x7528;<a href="https://pub.dartlang.org/packages/intl" target="_blank">Intl</a>&#x5305;&#x6211;&#x4EEC;&#x4E0D;&#x4EC5;&#x53EF;&#x4EE5;&#x975E;&#x5E38;&#x8F7B;&#x677E;&#x7684;&#x5B9E;&#x73B0;&#x56FD;&#x9645;&#x5316;&#xFF0C;&#x800C;&#x4E14;&#x4E5F;&#x53EF;&#x4EE5;&#x5C06;&#x5B57;&#x7B26;&#x4E32;&#x6587;&#x672C;&#x5206;&#x79BB;&#x6210;&#x5355;&#x72EC;&#x7684;&#x6587;&#x4EF6;&#xFF0C;&#x65B9;&#x4FBF;&#x5F00;&#x53D1;&#x4EBA;&#x5458;&#x548C;&#x7FFB;&#x8BD1;&#x4EBA;&#x5458;&#x5206;&#x5DE5;&#x534F;&#x4F5C;&#x3002;&#x4E3A;&#x4E86;&#x4F7F;&#x7528;<a href="https://pub.dartlang.org/packages/intl" target="_blank">Intl</a>&#x5305;&#x6211;&#x4EEC;&#x9700;&#x8981;&#x6DFB;&#x52A0;&#x4E24;&#x4E2A;&#x4F9D;&#x8D56;&#xFF1A;</p>
<pre class="language-"><code class="lang-yaml"><span class="token key atrule">dependencies</span><span class="token punctuation">:</span>
  <span class="token comment">#...&#x7701;&#x7565;&#x65E0;&#x5173;&#x9879;</span>
  <span class="token key atrule">intl</span><span class="token punctuation">:</span> ^0.15.7 
<span class="token key atrule">dev_dependencies</span><span class="token punctuation">:</span>
   <span class="token comment">#...&#x7701;&#x7565;&#x65E0;&#x5173;&#x9879;</span>
  <span class="token key atrule">intl_translation</span><span class="token punctuation">:</span> ^0.17.2
</code></pre>
<p><a href="https://pub.dartlang.org/packages/intl_translation" target="_blank">intl_translation</a> &#x5305;&#x4E3B;&#x8981;&#x5305;&#x542B;&#x4E86;&#x4E00;&#x4E9B;&#x5DE5;&#x5177;&#xFF0C;&#x5B83;&#x5728;&#x5F00;&#x53D1;&#x9636;&#x6BB5;&#x4E3B;&#x8981;&#x4E3B;&#x8981;&#x7684;&#x4F5C;&#x7528;&#x662F;&#x4ECE;&#x4EE3;&#x7801;&#x4E2D;&#x63D0;&#x53D6;&#x8981;&#x56FD;&#x9645;&#x5316;&#x7684;&#x5B57;&#x7B26;&#x4E32;&#x5230;&#x5355;&#x72EC;&#x7684;arb&#x6587;&#x4EF6;&#x548C;&#x6839;&#x636E;arb&#x6587;&#x4EF6;&#x751F;&#x6210;&#x5BF9;&#x5E94;&#x8BED;&#x8A00;&#x7684;dart&#x4EE3;&#x7801;&#xFF0C;&#x800C;intl&#x5305;&#x4E3B;&#x8981;&#x662F;&#x5F15;&#x7528;&#x548C;&#x52A0;&#x8F7D;intl_translation&#x751F;&#x6210;&#x540E;&#x7684;dart&#x4EE3;&#x7801;&#x3002;&#x4E0B;&#x9762;&#x6211;&#x4EEC;&#x5C06;&#x4E00;&#x6B65;&#x6B65;&#x6765;&#x8BF4;&#x660E;&#x5982;&#x4F55;&#x4F7F;&#x7528;&#xFF1A;</p>
<h3 id="&#x7B2C;&#x4E00;&#x6B65;&#xFF1A;&#x521B;&#x5EFA;&#x5FC5;&#x8981;&#x76EE;&#x5F55;">&#x7B2C;&#x4E00;&#x6B65;&#xFF1A;&#x521B;&#x5EFA;&#x5FC5;&#x8981;&#x76EE;&#x5F55;</h3>
<p>&#x9996;&#x5148;&#xFF0C;&#x5728;&#x9879;&#x76EE;&#x6839;&#x76EE;&#x5F55;&#x4E0B;&#x521B;&#x5EFA;&#x4E00;&#x4E2A;l10n-arb&#x76EE;&#x5F55;&#xFF0C;&#x8BE5;&#x76EE;&#x5F55;&#x4FDD;&#x5B58;&#x6211;&#x4EEC;&#x63A5;&#x4E0B;&#x6765;&#x901A;&#x8FC7;intl_translation&#x547D;&#x4EE4;&#x751F;&#x6210;&#x7684;arb&#x6587;&#x4EF6;&#x3002;&#x4E00;&#x4E2A;&#x7B80;&#x5355;&#x7684;arb&#x6587;&#x4EF6;&#x5185;&#x5BB9;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre class="language-"><code class="lang-json"><span class="token punctuation">{</span>
  <span class="token property">&quot;@@last_modified&quot;</span><span class="token operator">:</span> <span class="token string">&quot;2018-12-10T15:46:20.897228&quot;</span><span class="token punctuation">,</span>
  <span class="token property">&quot;@@locale&quot;</span><span class="token operator">:</span><span class="token string">&quot;zh_CH&quot;</span><span class="token punctuation">,</span>
  <span class="token property">&quot;title&quot;</span><span class="token operator">:</span> <span class="token string">&quot;Flutter&#x5E94;&#x7528;&quot;</span><span class="token punctuation">,</span>
  <span class="token property">&quot;@title&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    <span class="token property">&quot;description&quot;</span><span class="token operator">:</span> <span class="token string">&quot;Title for the Demo application&quot;</span><span class="token punctuation">,</span>
    <span class="token property">&quot;type&quot;</span><span class="token operator">:</span> <span class="token string">&quot;text&quot;</span><span class="token punctuation">,</span>
    <span class="token property">&quot;placeholders&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span><span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre>
<p>&#x6211;&#x4EEC;&#x6839;&#x636E;&quot;@@locale&quot;&#x5B57;&#x6BB5;&#x53EF;&#x4EE5;&#x770B;&#x51FA;&#x8FD9;&#x4E2A;arb&#x5BF9;&#x5E94;&#x7684;&#x662F;&#x4E2D;&#x6587;&#x7B80;&#x4F53;&#x7684;&#x7FFB;&#x8BD1;&#xFF0C;&#x91CC;&#x9762;&#x7684;<code>title</code>&#x5B57;&#x6BB5;&#x5BF9;&#x5E94;&#x7684;&#x6B63;&#x662F;&#x6211;&#x4EEC;&#x5E94;&#x7528;&#x6807;&#x9898;&#x7684;&#x4E2D;&#x6587;&#x7B80;&#x4F53;&#x7FFB;&#x8BD1;&#x3002;<code>@title</code>&#x5B57;&#x6BB5;&#x662F;&#x5BF9;<code>title</code>&#x7684;&#x4E00;&#x4E9B;&#x63CF;&#x8FF0;&#x4FE1;&#x606F;&#x3002;</p>
<p>&#x63A5;&#x4E0B;&#x6765;&#xFF0C;&#x6211;&#x4EEC;&#x5728;lib&#x76EE;&#x5F55;&#x4E0B;&#x521B;&#x5EFA;&#x4E00;&#x4E2A;l10n&#x7684;&#x76EE;&#x5F55;&#xFF0C;&#x8BE5;&#x76EE;&#x5F55;&#x7528;&#x4E8E;&#x4FDD;&#x5B58;&#x4ECE;arb&#x6587;&#x4EF6;&#x751F;&#x6210;&#x7684;dart&#x4EE3;&#x7801;&#x6587;&#x4EF6;&#x3002;</p>
<h3 id="&#x7B2C;&#x4E8C;&#x6B65;&#xFF1A;&#x5B9E;&#x73B0;localizations&#x548C;delegate&#x7C7B;">&#x7B2C;&#x4E8C;&#x6B65;&#xFF1A;&#x5B9E;&#x73B0;Localizations&#x548C;Delegate&#x7C7B;</h3>
<p>&#x548C;&#x4E0A;&#x4E00;&#x8282;&#x4E2D;&#x7684;&#x6B65;&#x9AA4;&#x7C7B;&#x4F3C;&#xFF0C;&#x6211;&#x4EEC;&#x4ECD;&#x7136;&#x8981;&#x5B9E;&#x73B0;<code>Localizations</code>&#x548C;Delegate&#x7C7B;&#xFF0C;&#x4E0D;&#x540C;&#x7684;&#x662F;&#xFF0C;&#x73B0;&#x5728;&#x6211;&#x4EEC;&#x5728;&#x5B9E;&#x73B0;&#x65F6;&#x8981;&#x4F7F;&#x7528;intl&#x5305;&#x7684;&#x4E00;&#x4E9B;&#x65B9;&#x6CD5;&#xFF08;&#x6709;&#x4E9B;&#x662F;&#x52A8;&#x6001;&#x751F;&#x6210;&#x7684;&#xFF09;&#x3002;</p>
<p>&#x4E0B;&#x9762;&#x6211;&#x4EEC;&#x5728;<code>lib/l10n</code>&#x76EE;&#x5F55;&#x4E0B;&#x65B0;&#x5EFA;&#x4E00;&#x4E2A;&#x201C;localization_intl.dart&#x201D;&#x7684;&#x6587;&#x4EF6;&#xFF0C;&#x6587;&#x4EF6;&#x5185;&#x5BB9;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart"><span class="token keyword">import</span> <span class="token string">&apos;package:flutter/material.dart&apos;</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token string">&apos;package:intl/intl.dart&apos;</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token string">&apos;messages_all.dart&apos;</span><span class="token punctuation">;</span> <span class="token comment">//1</span>

<span class="token keyword">class</span> <span class="token class-name">DemoLocalizations</span> <span class="token punctuation">{</span>
  <span class="token keyword">static</span> Future<span class="token operator">&lt;</span>DemoLocalizations<span class="token operator">&gt;</span> <span class="token function">load</span><span class="token punctuation">(</span>Locale locale<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">final</span> String name <span class="token operator">=</span> locale<span class="token punctuation">.</span>countryCode<span class="token punctuation">.</span>isEmpty <span class="token operator">?</span> locale<span class="token punctuation">.</span>languageCode <span class="token punctuation">:</span> locale<span class="token punctuation">.</span><span class="token function">toString</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token keyword">final</span> String localeName <span class="token operator">=</span> Intl<span class="token punctuation">.</span><span class="token function">canonicalizedLocale</span><span class="token punctuation">(</span>name<span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token comment">//2</span>
    <span class="token keyword">return</span> <span class="token function">initializeMessages</span><span class="token punctuation">(</span>localeName<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">then</span><span class="token punctuation">(</span><span class="token punctuation">(</span>b<span class="token punctuation">)</span> <span class="token punctuation">{</span>
      Intl<span class="token punctuation">.</span>defaultLocale <span class="token operator">=</span> localeName<span class="token punctuation">;</span>
      <span class="token keyword">return</span> <span class="token keyword">new</span> <span class="token class-name">DemoLocalizations</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span>

  <span class="token keyword">static</span> DemoLocalizations <span class="token function">of</span><span class="token punctuation">(</span>BuildContext context<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">return</span> Localizations<span class="token punctuation">.</span>of<span class="token operator">&lt;</span>DemoLocalizations<span class="token operator">&gt;</span><span class="token punctuation">(</span>context<span class="token punctuation">,</span> DemoLocalizations<span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span>

  String <span class="token keyword">get</span> title <span class="token punctuation">{</span>
    <span class="token keyword">return</span> Intl<span class="token punctuation">.</span><span class="token function">message</span><span class="token punctuation">(</span>
      <span class="token string">&apos;Flutter APP&apos;</span><span class="token punctuation">,</span>
      name<span class="token punctuation">:</span> <span class="token string">&apos;title&apos;</span><span class="token punctuation">,</span>
      desc<span class="token punctuation">:</span> <span class="token string">&apos;Title for the Demo application&apos;</span><span class="token punctuation">,</span>
    <span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>

<span class="token comment">//Locale&#x4EE3;&#x7406;&#x7C7B;</span>
<span class="token keyword">class</span> <span class="token class-name">DemoLocalizationsDelegate</span> <span class="token keyword">extends</span> <span class="token class-name">LocalizationsDelegate</span><span class="token operator">&lt;</span>DemoLocalizations<span class="token operator">&gt;</span> <span class="token punctuation">{</span>
  <span class="token keyword">const</span> <span class="token function">DemoLocalizationsDelegate</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

  <span class="token comment">//&#x662F;&#x5426;&#x652F;&#x6301;&#x67D0;&#x4E2A;Local</span>
  <span class="token metadata symbol">@override</span>
  bool <span class="token function">isSupported</span><span class="token punctuation">(</span>Locale locale<span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">&gt;</span> <span class="token punctuation">[</span><span class="token string">&apos;en&apos;</span><span class="token punctuation">,</span> <span class="token string">&apos;zh&apos;</span><span class="token punctuation">]</span><span class="token punctuation">.</span><span class="token function">contains</span><span class="token punctuation">(</span>locale<span class="token punctuation">.</span>languageCode<span class="token punctuation">)</span><span class="token punctuation">;</span>

  <span class="token comment">// Flutter&#x4F1A;&#x8C03;&#x7528;&#x6B64;&#x7C7B;&#x52A0;&#x8F7D;&#x76F8;&#x5E94;&#x7684;Locale&#x8D44;&#x6E90;&#x7C7B;</span>
  <span class="token metadata symbol">@override</span>
  Future<span class="token operator">&lt;</span>DemoLocalizations<span class="token operator">&gt;</span> <span class="token function">load</span><span class="token punctuation">(</span>Locale locale<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token comment">//3</span>
    <span class="token keyword">return</span>  DemoLocalizations<span class="token punctuation">.</span><span class="token function">load</span><span class="token punctuation">(</span>locale<span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span>

  <span class="token comment">// &#x5F53;Localizations Widget&#x91CD;&#x65B0;build&#x65F6;&#xFF0C;&#x662F;&#x5426;&#x8C03;&#x7528;load&#x91CD;&#x65B0;&#x52A0;&#x8F7D;Locale&#x8D44;&#x6E90;.</span>
  <span class="token metadata symbol">@override</span>
  bool <span class="token function">shouldReload</span><span class="token punctuation">(</span>DemoLocalizationsDelegate old<span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">&gt;</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
</code></pre>
<p>&#x6CE8;&#x610F;&#xFF1A;</p>
<ul>
<li>&#x6CE8;&#x91CA;1&#x7684;&quot;messages_all.dart&quot;&#x6587;&#x4EF6;&#x662F;&#x901A;&#x8FC7;<a href="https://pub.dartlang.org/packages/intl_translation" target="_blank">intl_translation</a>&#x5DE5;&#x5177;&#x4ECE;arb&#x6587;&#x4EF6;&#x751F;&#x6210;&#x7684;&#x4EE3;&#x7801;&#xFF0C;&#x6240;&#x4EE5;&#x5728;&#x7B2C;&#x4E00;&#x6B21;&#x8FD0;&#x884C;&#x751F;&#x6210;&#x547D;&#x4EE4;&#x4E4B;&#x524D;&#xFF0C;&#x6B64;&#x6587;&#x4EF6;&#x4E0D;&#x5B58;&#x5728;&#x3002;&#x6CE8;&#x91CA;2&#x5904;&#x7684;<code>initializeMessages()</code>&#x65B9;&#x6CD5;&#x548C;&quot;messages_all.dart&quot;&#x6587;&#x4EF6;&#x4E00;&#x6837;&#xFF0C;&#x662F;&#x540C;&#x65F6;&#x751F;&#x6210;&#x7684;&#x3002;</li>
<li>&#x6CE8;&#x91CA;3&#x5904;&#x548C;&#x4E0A;&#x4E00;&#x8282;&#x793A;&#x4F8B;&#x4EE3;&#x7801;&#x4E0D;&#x540C;&#xFF0C;&#x8FD9;&#x91CC;&#x6211;&#x4EEC;&#x76F4;&#x63A5;&#x8C03;&#x7528;<code>DemoLocalizations.load()</code>&#x5373;&#x53EF;&#x3002;</li>
</ul>
<h3 id="&#x7B2C;&#x4E09;&#x6B65;&#xFF1A;&#x6DFB;&#x52A0;&#x9700;&#x8981;&#x56FD;&#x9645;&#x5316;&#x7684;&#x5C5E;&#x6027;">&#x7B2C;&#x4E09;&#x6B65;&#xFF1A;&#x6DFB;&#x52A0;&#x9700;&#x8981;&#x56FD;&#x9645;&#x5316;&#x7684;&#x5C5E;&#x6027;</h3>
<p>&#x73B0;&#x5728;&#x6211;&#x4EEC;&#x53EF;&#x4EE5;&#x5728;DemoLocalizations&#x7C7B;&#x4E2D;&#x6DFB;&#x52A0;&#x9700;&#x8981;&#x56FD;&#x9645;&#x5316;&#x7684;&#x5C5E;&#x6027;&#x6216;&#x65B9;&#x6CD5;&#xFF0C;&#x5982;&#x4E0A;&#x9762;&#x793A;&#x4F8B;&#x4EE3;&#x7801;&#x4E2D;&#x7684;<code>title</code>&#x5C5E;&#x6027;&#xFF0C;&#x8FD9;&#x65F6;&#x6211;&#x4EEC;&#x5C31;&#x8981;&#x7528;&#x5230;Intl&#x5E93;&#x63D0;&#x4F9B;&#x7684;&#x4E00;&#x4E9B;&#x65B9;&#x6CD5;&#xFF0C;&#x8FD9;&#x4E9B;&#x65B9;&#x6CD5;&#x53EF;&#x4EE5;&#x5E2E;&#x6211;&#x4EEC;&#x8F7B;&#x677E;&#x5B9E;&#x73B0;&#x4E0D;&#x540C;&#x8BED;&#x8A00;&#x7684;&#x4E00;&#x4E9B;&#x8BED;&#x6CD5;&#x7279;&#x6027;&#xFF0C;&#x5982;&#x590D;&#x6570;&#x8BED;&#x5883;&#xFF0C;&#x4E3E;&#x4E2A;&#x4F8B;&#x5B50;&#xFF0C;&#x6BD4;&#x5982;&#x6211;&#x4EEC;&#x6709;&#x4E00;&#x4E2A;&#x7535;&#x5B50;&#x90AE;&#x4EF6;&#x5217;&#x8868;&#x9875;&#xFF0C;&#x6211;&#x4EEC;&#x9700;&#x8981;&#x5728;&#x9876;&#x90E8;&#x663E;&#x793A;&#x672A;&#x8BFB;&#x90AE;&#x4EF6;&#x7684;&#x6570;&#x91CF;&#xFF0C;&#x5728;&#x672A;&#x8BFB;&#x6570;&#x91CF;&#x4E0D;&#x540C;&#x4E8B;&#xFF0C;&#x6211;&#x4EEC;&#x5C55;&#x793A;&#x7684;&#x6587;&#x672C;&#x53EF;&#x80FD;&#x4F1A;&#x4E0D;&#x540C;&#xFF1A;</p>
<table>
<thead>
<tr>
<th>&#x672A;&#x8BFB;&#x90AE;&#x4EF6;&#x6570;</th>
<th>&#x63D0;&#x793A;&#x8BED;</th>
</tr>
</thead>
<tbody>
<tr>
<td>0</td>
<td>There are no emails left</td>
</tr>
<tr>
<td>1</td>
<td>There is 1 email left</td>
</tr>
<tr>
<td>n(n&gt;1)</td>
<td>There are n emails left</td>
</tr>
</tbody>
</table>
<p>&#x6211;&#x4EEC;&#x53EF;&#x4EE5;&#x901A;&#x8FC7;<code>Intl.plural(...)</code>&#x6765;&#x5B9E;&#x73B0;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart"><span class="token function">remainingEmailsMessage</span><span class="token punctuation">(</span>int howMany<span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">&gt;</span> Intl<span class="token punctuation">.</span><span class="token function">plural</span><span class="token punctuation">(</span>howMany<span class="token punctuation">,</span>
    zero<span class="token punctuation">:</span> <span class="token string">&apos;There are no emails left&apos;</span><span class="token punctuation">,</span>
    one<span class="token punctuation">:</span> <span class="token string">&apos;There is $howMany email left&apos;</span><span class="token punctuation">,</span>
    other<span class="token punctuation">:</span> <span class="token string">&apos;There are $howMany emails left&apos;</span><span class="token punctuation">,</span>
    name<span class="token punctuation">:</span> <span class="token string">&quot;remainingEmailsMessage&quot;</span><span class="token punctuation">,</span>
    args<span class="token punctuation">:</span> <span class="token punctuation">[</span>howMany<span class="token punctuation">]</span><span class="token punctuation">,</span>
    desc<span class="token punctuation">:</span> <span class="token string">&quot;How many emails remain after archiving.&quot;</span><span class="token punctuation">,</span>
    examples<span class="token punctuation">:</span> <span class="token keyword">const</span> <span class="token punctuation">{</span><span class="token string">&apos;howMany&apos;</span><span class="token punctuation">:</span> <span class="token number">42</span><span class="token punctuation">,</span> <span class="token string">&apos;userName&apos;</span><span class="token punctuation">:</span> <span class="token string">&apos;Fred&apos;</span><span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p>&#x53EF;&#x4EE5;&#x770B;&#x5230;&#x901A;&#x8FC7;<code>Intl.plural</code>&#x65B9;&#x6CD5;&#x53EF;&#x4EE5;&#x5728;<code>howMany</code>&#x503C;&#x4E0D;&#x540C;&#x65F6;&#x8F93;&#x51FA;&#x4E0D;&#x540C;&#x7684;&#x63D0;&#x793A;&#x4FE1;&#x606F;&#x3002;</p>
<p><a href="https://pub.dartlang.org/packages/intl" target="_blank">Intl</a>&#x5305;&#x8FD8;&#x6709;&#x4E00;&#x4E9B;&#x5176;&#x4ED6;&#x7684;&#x65B9;&#x6CD5;&#xFF0C;&#x8BFB;&#x8005;&#x53EF;&#x4EE5;&#x81EA;&#x884C;&#x67E5;&#x770B;&#x5176;&#x6587;&#x6863;&#xFF0C;&#x672C;&#x4E66;&#x4E0D;&#x5728;&#x8D58;&#x8FF0;&#x3002;</p>
<h3 id="&#x7B2C;&#x56DB;&#x6B65;&#xFF1A;&#x751F;&#x6210;arb&#x6587;&#x4EF6;">&#x7B2C;&#x56DB;&#x6B65;&#xFF1A;&#x751F;&#x6210;arb&#x6587;&#x4EF6;</h3>
<p>&#x73B0;&#x5728;&#x6211;&#x4EEC;&#x53EF;&#x4EE5;&#x901A;<a href="https://pub.dartlang.org/packages/intl_translation" target="_blank">intl_translation</a>&#x5305;&#x7684;&#x5DE5;&#x5177;&#x6765;&#x63D0;&#x53D6;&#x4EE3;&#x7801;&#x4E2D;&#x7684;&#x5B57;&#x7B26;&#x4E32;&#x5230;&#x4E00;&#x4E2A;arb&#x6587;&#x4EF6;&#xFF0C;&#x8FD0;&#x884C;&#x5982;&#x4E0B;&#x547D;&#x540D;&#xFF1A;</p>
<pre class="language-"><code class="lang-shell">flutter pub pub run intl_translation:extract_to_arb --output-dir<span class="token operator">=</span>l10n-arb <span class="token punctuation">\</span> lib/l10n/localization_intl.dart
</code></pre>
<p>&#x8FD0;&#x884C;&#x6B64;&#x547D;&#x4EE4;&#x540E;&#xFF0C;&#x4F1A;&#x5C06;&#x6211;&#x4EEC;&#x4E4B;&#x524D;&#x901A;&#x8FC7;Intl API&#x6807;&#x8BC6;&#x7684;&#x5C5E;&#x6027;&#x548C;&#x5B57;&#x7B26;&#x4E32;&#x63D0;&#x53D6;&#x5230;&#x201C;l10n-arb/intl_messages.arb&#x201D;&#x6587;&#x4EF6;&#x4E2D;&#xFF0C;&#x6211;&#x4EEC;&#x770B;&#x770B;&#x5176;&#x5185;&#x5BB9;&#xFF1A;</p>
<pre class="language-"><code class="lang-json"><span class="token punctuation">{</span>
  <span class="token property">&quot;@@last_modified&quot;</span><span class="token operator">:</span> <span class="token string">&quot;2018-12-10T17:37:28.505088&quot;</span><span class="token punctuation">,</span>
  <span class="token property">&quot;title&quot;</span><span class="token operator">:</span> <span class="token string">&quot;Flutter APP&quot;</span><span class="token punctuation">,</span>
  <span class="token property">&quot;@title&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    <span class="token property">&quot;description&quot;</span><span class="token operator">:</span> <span class="token string">&quot;Title for the Demo application&quot;</span><span class="token punctuation">,</span>
    <span class="token property">&quot;type&quot;</span><span class="token operator">:</span> <span class="token string">&quot;text&quot;</span><span class="token punctuation">,</span>
    <span class="token property">&quot;placeholders&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span><span class="token punctuation">}</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  <span class="token property">&quot;remainingEmailsMessage&quot;</span><span class="token operator">:</span> <span class="token string">&quot;{howMany,plural, =0{There are no emails left}=1{There is {howMany} email left}other{There are {howMany} emails left}}&quot;</span><span class="token punctuation">,</span>
  <span class="token property">&quot;@remainingEmailsMessage&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    <span class="token property">&quot;description&quot;</span><span class="token operator">:</span> <span class="token string">&quot;How many emails remain after archiving.&quot;</span><span class="token punctuation">,</span>
    <span class="token property">&quot;type&quot;</span><span class="token operator">:</span> <span class="token string">&quot;text&quot;</span><span class="token punctuation">,</span>
    <span class="token property">&quot;placeholders&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span>
      <span class="token property">&quot;howMany&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span>
        <span class="token property">&quot;example&quot;</span><span class="token operator">:</span> <span class="token number">42</span>
      <span class="token punctuation">}</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre>
<p>&#x8FD9;&#x4E2A;&#x662F;&#x9ED8;&#x8BA4;&#x7684;Locale&#x8D44;&#x6E90;&#x6587;&#x4EF6;&#xFF0C;&#x5982;&#x679C;&#x6211;&#x4EEC;&#x73B0;&#x5728;&#x8981;&#x652F;&#x6301;&#x4E2D;&#x6587;&#x7B80;&#x4F53;&#xFF0C;&#x53EA;&#x9700;&#x8981;&#x5728;&#x8BE5;&#x6587;&#x4EF6;&#x540C;&#x7EA7;&#x76EE;&#x5F55;&#x521B;&#x5EFA;&#x4E00;&#x4E2A;&quot;intl_zh_CN.arb&quot;&#x6587;&#x4EF6;&#xFF0C;&#x7136;&#x540E;&#x5C06;&quot;intl_messages.arb&quot;&#x7684;&#x5185;&#x5BB9;&#x62F7;&#x8D1D;&#x5230;&quot;intl_zh_CN.arb&quot;&#x6587;&#x4EF6;&#xFF0C;&#x63A5;&#x4E0B;&#x6765;&#x5C06;&#x82F1;&#x6587;&#x7FFB;&#x8BD1;&#x4E3A;&#x4E2D;&#x6587;&#x5373;&#x53EF;&#xFF0C;&#x7FFB;&#x8BD1;&#x540E;&#x7684;&quot;intl_zh_CN.arb&quot;&#x6587;&#x4EF6;&#x5185;&#x5BB9;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre class="language-"><code class="lang-json"><span class="token punctuation">{</span>
  <span class="token property">&quot;@@last_modified&quot;</span><span class="token operator">:</span> <span class="token string">&quot;2018-12-10T15:46:20.897228&quot;</span><span class="token punctuation">,</span>
  <span class="token property">&quot;@@locale&quot;</span><span class="token operator">:</span><span class="token string">&quot;zh_CN&quot;</span><span class="token punctuation">,</span>
  <span class="token property">&quot;title&quot;</span><span class="token operator">:</span> <span class="token string">&quot;Flutter&#x5E94;&#x7528;&quot;</span><span class="token punctuation">,</span>
  <span class="token property">&quot;@title&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    <span class="token property">&quot;description&quot;</span><span class="token operator">:</span> <span class="token string">&quot;Title for the Demo application&quot;</span><span class="token punctuation">,</span>
    <span class="token property">&quot;type&quot;</span><span class="token operator">:</span> <span class="token string">&quot;text&quot;</span><span class="token punctuation">,</span>
    <span class="token property">&quot;placeholders&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span><span class="token punctuation">}</span>
  <span class="token punctuation">}</span><span class="token punctuation">,</span>
  <span class="token property">&quot;remainingEmailsMessage&quot;</span><span class="token operator">:</span> <span class="token string">&quot;{howMany,plural, =0{&#x6CA1;&#x6709;&#x672A;&#x8BFB;&#x90AE;&#x4EF6;}=1{&#x6709;{howMany}&#x5C01;&#x672A;&#x8BFB;&#x90AE;&#x4EF6;}other{&#x6709;{howMany}&#x5C01;&#x672A;&#x8BFB;&#x90AE;&#x4EF6;}}&quot;</span><span class="token punctuation">,</span>
  <span class="token property">&quot;@remainingEmailsMessage&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    <span class="token property">&quot;description&quot;</span><span class="token operator">:</span> <span class="token string">&quot;How many emails remain after archiving.&quot;</span><span class="token punctuation">,</span>
    <span class="token property">&quot;type&quot;</span><span class="token operator">:</span> <span class="token string">&quot;text&quot;</span><span class="token punctuation">,</span>
    <span class="token property">&quot;placeholders&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span>
      <span class="token property">&quot;howMany&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span>
        <span class="token property">&quot;example&quot;</span><span class="token operator">:</span> <span class="token number">42</span>
      <span class="token punctuation">}</span>
    <span class="token punctuation">}</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre>
<p>&#x6211;&#x4EEC;&#x5FC5;&#x987B;&#x8981;&#x7FFB;&#x8BD1;<code>title</code>&#x548C;<code>remainingEmailsMessage</code>&#x5B57;&#x6BB5;&#xFF0C;<code>description</code>&#x662F;&#x8BE5;&#x5B57;&#x6BB5;&#x7684;&#x8BF4;&#x660E;&#xFF0C;&#x901A;&#x5E38;&#x7ED9;&#x7FFB;&#x8BD1;&#x4EBA;&#x5458;&#x770B;&#xFF0C;&#x4EE3;&#x7801;&#x4E2D;&#x4E0D;&#x4F1A;&#x7528;&#x5230;&#x3002;</p>
<p>&#x6709;&#x4E24;&#x70B9;&#x9700;&#x8981;&#x8BF4;&#x660E;&#xFF1A;</p>
<ol>
<li>&#x5982;&#x679C;&#x67D0;&#x4E2A;&#x7279;&#x5B9A;&#x7684;arb&#x4E2D;&#x7F3A;&#x5931;&#x67D0;&#x4E2A;&#x5C5E;&#x6027;&#xFF0C;&#x90A3;&#x4E48;&#x5E94;&#x7528;&#x5C06;&#x4F1A;&#x52A0;&#x8F7D;&#x9ED8;&#x8BA4;&#x7684;arb&#x6587;&#x4EF6;(intl_messages.arb)&#x4E2D;&#x7684;&#x76F8;&#x5E94;&#x5C5E;&#x6027;&#xFF0C;&#x8FD9;&#x662F;Intl&#x7684;&#x6258;&#x5E95;&#x7B56;&#x7565;&#x3002;</li>
<li>&#x6BCF;&#x6B21;&#x8FD0;&#x884C;&#x63D0;&#x53D6;&#x547D;&#x4EE4;&#x65F6;&#xFF0C;intl_messages.arb&#x90FD;&#x4F1A;&#x6839;&#x636E;&#x4EE3;&#x7801;&#x91CD;&#x65B0;&#x751F;&#x6210;&#xFF0C;&#x4F46;&#x5176;&#x4ED6;arb&#x6587;&#x4EF6;&#x4E0D;&#x4F1A;&#xFF0C;&#x6240;&#x4EE5;&#x5F53;&#x8981;&#x6DFB;&#x52A0;&#x65B0;&#x7684;&#x5B57;&#x6BB5;&#x6216;&#x65B9;&#x6CD5;&#x65F6;&#xFF0C;&#x5176;&#x4ED6;arb&#x6587;&#x4EF6;&#x662F;&#x589E;&#x91CF;&#x7684;&#xFF0C;&#x4E0D;&#x7528;&#x62C5;&#x5FC3;&#x4F1A;&#x8986;&#x76D6;&#x3002;</li>
<li>arb&#x6587;&#x4EF6;&#x662F;&#x6807;&#x51C6;&#x7684;&#xFF0C;&#x5176;&#x683C;&#x5F0F;&#x89C4;&#x8303;&#x53EF;&#x4EE5;&#x81EA;&#x884C;&#x4E86;&#x89E3;&#x3002;&#x901A;&#x5E38;&#x4F1A;&#x5C06;arb&#x6587;&#x4EF6;&#x4EA4;&#x7ED9;&#x7FFB;&#x8BD1;&#x4EBA;&#x5458;&#xFF0C;&#x5F53;&#x4ED6;&#x4EEC;&#x5B8C;&#x6210;&#x7FFB;&#x8BD1;&#x540E;&#xFF0C;&#x6211;&#x4EEC;&#x518D;&#x901A;&#x8FC7;&#x4E0B;&#x9762;&#x7684;&#x6B65;&#x9AA4;&#x6839;&#x636E;arb&#x6587;&#x4EF6;&#x751F;&#x6210;&#x6700;&#x7EC8;&#x7684;dart&#x4EE3;&#x7801;&#x3002;</li>
</ol>
<h3 id="&#x7B2C;&#x4E94;&#x6B65;&#xFF1A;&#x751F;&#x6210;dart&#x4EE3;&#x7801;">&#x7B2C;&#x4E94;&#x6B65;&#xFF1A;&#x751F;&#x6210;dart&#x4EE3;&#x7801;</h3>
<p>&#x6700;&#x540E;&#x4E00;&#x6B65;&#x5C31;&#x662F;&#x6839;&#x636E;arb&#x751F;&#x6210;dart&#x6587;&#x4EF6;&#xFF1A;</p>
<pre class="language-"><code class="lang-shell">flutter pub pub run intl_translation:generate_from_arb --output-dir<span class="token operator">=</span>lib/l10n --no-use-deferred-loading lib/l10n/localization_intl.dart l10n-arb/intl_*.arb
</code></pre>
<p>&#x8FD9;&#x53E5;&#x547D;&#x4EE4;&#x5728;&#x9996;&#x6B21;&#x8FD0;&#x884C;&#x65F6;&#x4F1A;&#x5728;&quot;lib/l10n&quot;&#x76EE;&#x5F55;&#x4E0B;&#x751F;&#x6210;&#x591A;&#x4E2A;&#x6587;&#x4EF6;&#xFF0C;&#x5BF9;&#x5E94;&#x591A;&#x79CD;Locale&#xFF0C;&#x8FD9;&#x4E9B;&#x4EE3;&#x7801;&#x4FBF;&#x662F;&#x6700;&#x7EC8;&#x8981;&#x4F7F;&#x7528;&#x7684;dart&#x4EE3;&#x7801;&#x3002;</p>
<h3 id="&#x603B;&#x7ED3;">&#x603B;&#x7ED3;</h3>
<p>&#x81F3;&#x6B64;&#xFF0C;&#x6211;&#x4EEC;&#x5C06;&#x4F7F;&#x7528;<a href="https://pub.dartlang.org/packages/intl" target="_blank">Intl</a>&#x5305;&#x5BF9;APP&#x8FDB;&#x884C;&#x56FD;&#x9645;&#x5316;&#x7684;&#x6D41;&#x7A0B;&#x4ECB;&#x7ECD;&#x5B8C;&#x4E86;&#xFF0C;&#x6211;&#x4EEC;&#x53EF;&#x4EE5;&#x53D1;&#x73B0;&#xFF0C;&#x5176;&#x4E2D;&#x7B2C;&#x4E00;&#x6B65;&#x548C;&#x7B2C;&#x4E8C;&#x6B65;&#x53EA;&#x5728;&#x7B2C;&#x4E00;&#x6B21;&#x9700;&#x8981;&#xFF0C;&#x800C;&#x6211;&#x4EEC;&#x5F00;&#x53D1;&#x65F6;&#x7684;&#x4E3B;&#x8981;&#x7684;&#x5DE5;&#x4F5C;&#x90FD;&#x662F;&#x5728;&#x7B2C;&#x4E09;&#x6B65;&#x3002;&#x7531;&#x4E8E;&#x6700;&#x540E;&#x4E24;&#x6B65;&#x5728;&#x7B2C;&#x4E09;&#x6B65;&#x5B8C;&#x6210;&#x540E;&#x6BCF;&#x6B21;&#x4E5F;&#x90FD;&#x9700;&#x8981;&#xFF0C;&#x6240;&#x4EE5;&#x6211;&#x4EEC;&#x53EF;&#x4EE5;&#x5C06;&#x6700;&#x540E;&#x4E24;&#x6B65;&#x653E;&#x5728;&#x4E00;&#x4E2A;shell&#x811A;&#x672C;&#x91CC;&#xFF0C;&#x5F53;&#x6211;&#x4EEC;&#x5B8C;&#x6210;&#x7B2C;&#x4E09;&#x6B65;&#x6216;&#x5B8C;&#x6210;arb&#x6587;&#x4EF6;&#x7FFB;&#x8BD1;&#x540E;&#x53EA;&#x9700;&#x8981;&#x5206;&#x522B;&#x6267;&#x884C;&#x8BE5;&#x811A;&#x672C;&#x5373;&#x53EF;&#x3002;&#x6211;&#x4EEC;&#x5728;&#x6839;&#x76EE;&#x5F55;&#x4E0B;&#x521B;&#x5EFA;&#x4E00;&#x4E2A;intl.sh&#x7684;&#x811A;&#x672C;&#xFF0C;&#x5185;&#x5BB9;&#x4E3A;&#xFF1A;</p>
<pre class="language-"><code class="lang-shell">flutter pub pub run intl_translation:extract_to_arb --output-dir<span class="token operator">=</span>l10n-arb lib/l10n/localization_intl.dart
flutter pub pub run intl_translation:generate_from_arb --output-dir<span class="token operator">=</span>lib/l10n --no-use-deferred-loading lib/l10n/localization_intl.dart l10n-arb/intl_*.arb
</code></pre>
<p>&#x7136;&#x540E;&#x6388;&#x4E88;&#x6267;&#x884C;&#x6743;&#x9650;&#xFF1A;</p>
<pre class="language-"><code class="lang-shell"><span class="token function">chmod</span> +x intl.sh
</code></pre>
<p>&#x6267;&#x884C;intl.sh</p>
<pre class="language-"><code class="lang-shell">./intl.sh
</code></pre>

                                
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